The following is a comprehensive guide on the installation method of carbon dioxide concentration controllers, which systematically elaborates on gas characteristics, environmental factors, and safety regulations:
1、 Design principles for installation height
Reference height based on gas density
Due to the fact that the density of CO ₂ is 1.5 times that of air, it usually deposits in low places. For conventional industrial scenarios, it is recommended to install it at a height of 30-60cm above the ground, with the sensor facing downwards to quickly capture the accumulated gas.
But in areas with frequent personnel activities (such as offices and classrooms), the height needs to be raised to 1.2-1.5 meters, aligned with the human respiratory tract, and accurately reflect the actual exposure concentration.
Dynamic adjustment for special scenarios
Near high-risk leakage sources (such as storage tanks and fermentation equipment): Install 1-3 meters downwind of the leakage point, reduce the height to below 0.5 meters, and avoid direct airflow impact.
Agricultural greenhouse: located 30cm above the crop canopy, balancing plant respiration monitoring and personnel safety needs.
2、 Site selection optimization strategy
Targeted layout of leakage sources
Micro leakage scenarios (such as valve joints) require close contact with potential leakage points; If there is a jet leak, maintain a safe distance to prevent high concentration gas from impacting the sensor.
Install one unit every 30-50 square meters in large areas to ensure there are no blind spots for monitoring, while following the standard of toxic gas detection radius ≤ 2 meters.
Avoiding interference sources
Airflow interference: Keep at least 2 meters away from air supply/exhaust outlets, doors and windows, and air conditioning vents to avoid data distortion.
Electromagnetic and chemical interference: Avoid strong electromagnetic equipment such as motors and transformers, as well as areas with smoke, pesticides, and corrosive gases. If necessary, install filtering devices.
3、 Enhanced environmental adaptability
Temperature and Humidity Control
The working temperature is strictly limited to -30 ℃ 50 ℃ (some high-precision equipment requires 0 ℃ 40 ℃), and the humidity is below 90% RH to avoid corrosion of the sensor by condensed water.
High temperature areas (such as boiler rooms) require the installation of insulation panels or extended conduits for protection.
Physical protective measures
Use explosion-proof brackets to fix equipment, and install shock-absorbing bases in vibration environments (such as factories).
Outdoor or humid places should use IP65 protection level enclosures, with waterproof joint sealing treatment.
4、 Installation process specifications
Fixed method selection
Wall mounted: suitable for most indoor scenes, using a horizontal ruler to ensure verticality, with an installation height error of ≤± 5 °.
Pipeline type: prioritize proximity to actual occupied space for easy maintenance; During roof installation, all areas must be covered.
Electrical connection requirements
Using RVV cables to pass through metal pipes for grounding, the shielding layer is reliably connected to the controller casing, and the anti-static ability is above 15KV.
When linking exhaust equipment, the output signal is connected to the control system through a relay, and 30% redundant capacity is reserved for the wiring terminals.
5、 Debugging and acceptance standards
Two stage calibration process
Zero point calibration: Complete benchmark adjustment in fresh air.
Span calibration: Use 1.0% CO ₂ standard gas sample, with an error controlled within ± 5%, and conduct periodic calibration at least once a year.
Functional verification testing
Simulate triggering of sound and light alarm for excessive concentration, verify response time ≤ 10 seconds, and synchronously start the exhaust system.
Multi device networking test RS485 communication stability to ensure data latency<1 second.
Through the above systematic installation plan, the accuracy of CO ₂ concentration monitoring can reach ± 2% FS, and the failure rate can be reduced to below 0.5%, significantly improving industrial safety and environmental management efficiency.